Răspuns:
1032:(288÷12)
1032:24
43
6•(49:7-2•3)
6•(7-6)
6•1
6
2x+1=7
2x=7-1
2x=6
x=6:2
x=3
4x+9=4x-2
4x-4x=-2-9
x=-11
